I've been curious what model Martin acoustic Jason plays, because it looks and sounds a lot like my own guitar. At the Bootleg Theater I got up close, but there was green tape over the guitar soundhole and I couldn't see the model number. Tonight someone has posted a video on Youtube - "Your Final Setting Sun" Live at KFUV - that allows you to see right into the soundhole and sure enough, it's a Martin 000-15 Mahogany Top Auditorium, exactly the same guitar as mine!